The contour lines on the plane are the lines parallel to the H-plane in the plane.
举一反三
- ______ lines are, by definition, lines on the same plane that never join. A: Lateral B: Intersecting C: Vertical D: Parallel
- How many regions would 79 lines separate a 2-D plane? Assume that no three lines cross at the same point, i.e. lines only cross in pairs.<br/>______
- “Board the plane” means _________ A: go out of the plane B: leave the plane C: enter the plane D: run away from the plane. E: C
- Which<br/>plane that axial surfaces of folds are parallel to? ____ A: plane<br/>AB B: plane<br/>AC C: plane<br/>BC D: anyone may be possible
- People listen to music on the following three planes: (1)the _____________ plane, (2) the ___________plane, (3) the___________ _____________ plane.